A209737 Number of n X n 0..5 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..5 introduced in row major order

1, 6, 2025, 20611956, 3309942226828, 6126537051572916244, 126664397726626418134051983

Offset

1,2

Comments

Diagonal of A209744

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=5
..0..0..0..0..1....0..0..0..1..1....0..0..0..0..0....0..0..0..0..0
..1..2..1..2..0....1..2..1..2..0....1..2..1..2..1....1..2..1..2..1
..0..1..0..0..3....1..0..0..0..3....0..0..0..0..0....0..1..0..2..3
..1..2..1..2..2....3..3..4..1..0....1..2..1..2..1....1..4..4..0..2
..0..2..3..1..0....1..4..5..4..0....0..0..1..0..0....5..5..2..0..1

Crossrefs

Sequence in context: A024086 A094036 A053293 * A209458 A209520 A279440

Adjacent sequences: A209734 A209735 A209736 * A209738 A209739 A209740

Keyword

nonn

Author

R. H. Hardin Mar 12 2012

Status

approved